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Valued Contributor
mgaafar
Posts: 108
Registered: ‎11-29-2011
Accepted Solution

STEEL DESIGN ASD 1989 SLENDER SECTION

448 Views, 4 Replies
02-13-2013 08:32 AM

Hello,

         I noticed on the steel design check using ASD 1989 9th edition that the calculated allowable stress is very low. I did a quick calculations and the allowable stresses should be way higher than the calculated values.

The section is a T-section with b=20mm , hw=140mm, tw=6.4mm and tf=6.4mm

I think RSA calculated Q wrongly as per file attached..please check.

and if that is a bug, how to overwrite this value to properly design the rest of the members?

Thanks

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Artur.Kosakowski
Posts: 5,076
Registered: ‎12-17-2010

Re: STEEL DESIGN ASD 1989 SLENDER SECTION

02-13-2013 11:47 PM in reply to: mgaafar

Could you attach your hand calculations too please?



Artur Kosakowski
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Valued Contributor
mgaafar
Posts: 108
Registered: ‎11-29-2011

Re: STEEL DESIGN ASD 1989 SLENDER SECTION

02-15-2013 09:30 AM in reply to: Artur.Kosakowski

here you are...basically I think Q is calculated wrong, it can not be 0.02.

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Artur.Kosakowski
Posts: 5,076
Registered: ‎12-17-2010

Re: STEEL DESIGN ASD 1989 SLENDER SECTION

02-18-2013 03:06 AM in reply to: mgaafar

Have you tried to use the latest version of ASD?



Artur Kosakowski
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Valued Contributor
mgaafar
Posts: 108
Registered: ‎11-29-2011

Re: STEEL DESIGN ASD 1989 SLENDER SECTION

02-19-2013 09:31 AM in reply to: Artur.Kosakowski

I am checking a Rig that was designed for API 4F, so I have to check it against the ASD 1989 9th edition, so it will be great if you fix that bug.

I will manually check the ASD code check in the 13th edition and will let you know.

 

Thanks.

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